Method of assembling a heat exchange apparatus

Details Method of assembling a heat exchange apparatus Method of assembling a heat exchange apparatus

1975-03-19

1980-05-27

Simpson, Othell M.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

408 1R, 409244, B23P 1526

Patent

active

042043050

ABSTRACT:
In accordance with an embodiment of the invention, an array of apertured flat plates support the tubes in a heat exchanger. Each aperture has at least three bights that provide individual fluid passageways when the associated tube is lodged in place. At least three inwardly protruding members that separate the bights restrain tube movement. Each of these members define arcs of a circle that has a diameter which is only slightly larger than the outside diameter of the respective tube. During heat exchanger assembly, this slightly larger diameter of the circle defined by the inwardly protruding members accommodates departures in the tubing from a perfectly straight condition. In operation, the individual tubes will tend to lay against one or two of the members in each aperture in almost line contact to prevent "crevice corrosion." The gap between the outer surface of the tube and the member or members with which it is not in contact, moreover, is so great that crevice corrosion in this region also is essentially overcome.

REFERENCES:
patent: 505712 (1893-09-01), Lofdahl
patent: 2317514 (1943-04-01), Bonnafe
patent: 2334855 (1943-11-01), Zinkl
patent: 2549490 (1951-04-01), Kuhl

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